Pypi · Cornac · CVE-2026-43637
**Name of the Vulnerable Software and Affected Versions**
Cornac versions prior to 2.6.0
**Description**
A path traversal issue, specifically a Tar Slip, exists when the ` extract archive()` function in cornac/utils/download.py processes a crafted TAR archive. By using absolute paths, symlink/hardlink entries, or `../` sequences, an attacker can cause `archive.extractall()` to write arbitrary files outside the intended cache directory to any location on the filesystem accessible to the running process. This can be triggered via built-in dataset loaders that automatically download and extract archives.
**Recommendations**
Update to version 2.6.0 or later.
As a temporary mitigation, restrict the use of the ` extract archive()` function or avoid using built-in dataset loaders with untrusted archives.